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473
node_modules/webpack/lib/css/CssLoadingRuntimeModule.js
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473
node_modules/webpack/lib/css/CssLoadingRuntimeModule.js
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { SyncWaterfallHook } = require("tapable");
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const Compilation = require("../Compilation");
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const RuntimeGlobals = require("../RuntimeGlobals");
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const RuntimeModule = require("../RuntimeModule");
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const Template = require("../Template");
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const compileBooleanMatcher = require("../util/compileBooleanMatcher");
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const { chunkHasCss } = require("./CssModulesPlugin");
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../Compilation").RuntimeRequirementsContext} RuntimeRequirementsContext */
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/**
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* @typedef {Object} JsonpCompilationPluginHooks
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* @property {SyncWaterfallHook<[string, Chunk]>} createStylesheet
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*/
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/** @type {WeakMap<Compilation, JsonpCompilationPluginHooks>} */
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const compilationHooksMap = new WeakMap();
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class CssLoadingRuntimeModule extends RuntimeModule {
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/**
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* @param {Compilation} compilation the compilation
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* @returns {JsonpCompilationPluginHooks} hooks
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*/
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static getCompilationHooks(compilation) {
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if (!(compilation instanceof Compilation)) {
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throw new TypeError(
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"The 'compilation' argument must be an instance of Compilation"
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);
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}
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let hooks = compilationHooksMap.get(compilation);
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if (hooks === undefined) {
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hooks = {
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createStylesheet: new SyncWaterfallHook(["source", "chunk"])
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};
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compilationHooksMap.set(compilation, hooks);
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}
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return hooks;
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}
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/**
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* @param {Set<string>} runtimeRequirements runtime requirements
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*/
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constructor(runtimeRequirements) {
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super("css loading", 10);
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this._runtimeRequirements = runtimeRequirements;
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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const { compilation, chunk, _runtimeRequirements } = this;
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const {
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chunkGraph,
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runtimeTemplate,
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outputOptions: {
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crossOriginLoading,
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uniqueName,
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chunkLoadTimeout: loadTimeout
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}
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} = /** @type {Compilation} */ (compilation);
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const fn = RuntimeGlobals.ensureChunkHandlers;
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const conditionMap = chunkGraph.getChunkConditionMap(
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/** @type {Chunk} */ (chunk),
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/**
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* @param {Chunk} chunk the chunk
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* @param {ChunkGraph} chunkGraph the chunk graph
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* @returns {boolean} true, if the chunk has css
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*/
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(chunk, chunkGraph) =>
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!!chunkGraph.getChunkModulesIterableBySourceType(chunk, "css")
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);
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const hasCssMatcher = compileBooleanMatcher(conditionMap);
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const withLoading =
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_runtimeRequirements.has(RuntimeGlobals.ensureChunkHandlers) &&
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hasCssMatcher !== false;
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/** @type {boolean} */
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const withHmr = _runtimeRequirements.has(
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RuntimeGlobals.hmrDownloadUpdateHandlers
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);
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/** @type {Set<number | string | null>} */
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const initialChunkIdsWithCss = new Set();
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/** @type {Set<number | string | null>} */
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const initialChunkIdsWithoutCss = new Set();
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for (const c of /** @type {Chunk} */ (chunk).getAllInitialChunks()) {
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(chunkHasCss(c, chunkGraph)
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? initialChunkIdsWithCss
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: initialChunkIdsWithoutCss
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).add(c.id);
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}
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if (!withLoading && !withHmr && initialChunkIdsWithCss.size === 0) {
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return null;
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}
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const { createStylesheet } = CssLoadingRuntimeModule.getCompilationHooks(
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/** @type {Compilation} */ (compilation)
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);
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const stateExpression = withHmr
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? `${RuntimeGlobals.hmrRuntimeStatePrefix}_css`
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: undefined;
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const code = Template.asString([
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"link = document.createElement('link');",
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uniqueName
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? 'link.setAttribute("data-webpack", uniqueName + ":" + key);'
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: "",
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"link.setAttribute(loadingAttribute, 1);",
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'link.rel = "stylesheet";',
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"link.href = url;",
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crossOriginLoading
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? crossOriginLoading === "use-credentials"
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? 'link.crossOrigin = "use-credentials";'
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: Template.asString([
|
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"if (link.href.indexOf(window.location.origin + '/') !== 0) {",
|
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Template.indent(
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`link.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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),
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"}"
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])
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: ""
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]);
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/** @type {(str: string) => number} */
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const cc = str => str.charCodeAt(0);
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const name = uniqueName
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? runtimeTemplate.concatenation(
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"--webpack-",
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{ expr: "uniqueName" },
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"-",
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{ expr: "chunkId" }
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)
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: runtimeTemplate.concatenation("--webpack-", { expr: "chunkId" });
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return Template.asString([
|
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"// object to store loaded and loading chunks",
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"// undefined = chunk not loaded, null = chunk preloaded/prefetched",
|
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"// [resolve, reject, Promise] = chunk loading, 0 = chunk loaded",
|
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`var installedChunks = ${
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stateExpression ? `${stateExpression} = ${stateExpression} || ` : ""
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}{${Array.from(
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initialChunkIdsWithoutCss,
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id => `${JSON.stringify(id)}:0`
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).join(",")}};`,
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"",
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uniqueName
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? `var uniqueName = ${JSON.stringify(
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runtimeTemplate.outputOptions.uniqueName
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)};`
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: "// data-webpack is not used as build has no uniqueName",
|
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`var loadCssChunkData = ${runtimeTemplate.basicFunction(
|
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"target, link, chunkId",
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[
|
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`var data, token = "", token2, exports = {}, exportsWithId = [], exportsWithDashes = [], ${
|
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withHmr ? "moduleIds = [], " : ""
|
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}name = ${name}, i = 0, cc = 1;`,
|
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"try {",
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Template.indent([
|
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"if(!link) link = loadStylesheet(chunkId);",
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// `link.sheet.rules` for legacy browsers
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"var cssRules = link.sheet.cssRules || link.sheet.rules;",
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"var j = cssRules.length - 1;",
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"while(j > -1 && !data) {",
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Template.indent([
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"var style = cssRules[j--].style;",
|
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"if(!style) continue;",
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`data = style.getPropertyValue(name);`
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]),
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"}"
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]),
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"}catch(e){}",
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"if(!data) {",
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Template.indent([
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"data = getComputedStyle(document.head).getPropertyValue(name);"
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]),
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"}",
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"if(!data) return [];",
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"for(; cc; i++) {",
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Template.indent([
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||||
"cc = data.charCodeAt(i);",
|
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`if(cc == ${cc("(")}) { token2 = token; token = ""; }`,
|
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`else if(cc == ${cc(
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")"
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)}) { exports[token2.replace(/^_/, "")] = token.replace(/^_/, ""); token = ""; }`,
|
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`else if(cc == ${cc("/")} || cc == ${cc(
|
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"%"
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)}) { token = token.replace(/^_/, ""); exports[token] = token; exportsWithId.push(token); if(cc == ${cc(
|
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"%"
|
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)}) exportsWithDashes.push(token); token = ""; }`,
|
||||
`else if(!cc || cc == ${cc(
|
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","
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)}) { token = token.replace(/^_/, ""); exportsWithId.forEach(${runtimeTemplate.expressionFunction(
|
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`exports[x] = ${
|
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uniqueName
|
||||
? runtimeTemplate.concatenation(
|
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{ expr: "uniqueName" },
|
||||
"-",
|
||||
{ expr: "token" },
|
||||
"-",
|
||||
{ expr: "exports[x]" }
|
||||
)
|
||||
: runtimeTemplate.concatenation({ expr: "token" }, "-", {
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expr: "exports[x]"
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})
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}`,
|
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"x"
|
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)}); exportsWithDashes.forEach(${runtimeTemplate.expressionFunction(
|
||||
`exports[x] = "--" + exports[x]`,
|
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"x"
|
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)}); ${
|
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RuntimeGlobals.makeNamespaceObject
|
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}(exports); target[token] = (${runtimeTemplate.basicFunction(
|
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"exports, module",
|
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`module.exports = exports;`
|
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)}).bind(null, exports); ${
|
||||
withHmr ? "moduleIds.push(token); " : ""
|
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}token = ""; exports = {}; exportsWithId.length = 0; }`,
|
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`else if(cc == ${cc("\\")}) { token += data[++i] }`,
|
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`else { token += data[i]; }`
|
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]),
|
||||
"}",
|
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`${
|
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withHmr ? `if(target == ${RuntimeGlobals.moduleFactories}) ` : ""
|
||||
}installedChunks[chunkId] = 0;`,
|
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withHmr ? "return moduleIds;" : ""
|
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]
|
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)}`,
|
||||
'var loadingAttribute = "data-webpack-loading";',
|
||||
`var loadStylesheet = ${runtimeTemplate.basicFunction(
|
||||
"chunkId, url, done" + (withHmr ? ", hmr" : ""),
|
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[
|
||||
'var link, needAttach, key = "chunk-" + chunkId;',
|
||||
withHmr ? "if(!hmr) {" : "",
|
||||
'var links = document.getElementsByTagName("link");',
|
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"for(var i = 0; i < links.length; i++) {",
|
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Template.indent([
|
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"var l = links[i];",
|
||||
`if(l.rel == "stylesheet" && (${
|
||||
withHmr
|
||||
? 'l.href.startsWith(url) || l.getAttribute("href").startsWith(url)'
|
||||
: 'l.href == url || l.getAttribute("href") == url'
|
||||
}${
|
||||
uniqueName
|
||||
? ' || l.getAttribute("data-webpack") == uniqueName + ":" + key'
|
||||
: ""
|
||||
})) { link = l; break; }`
|
||||
]),
|
||||
"}",
|
||||
"if(!done) return link;",
|
||||
withHmr ? "}" : "",
|
||||
"if(!link) {",
|
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Template.indent([
|
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"needAttach = true;",
|
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createStylesheet.call(code, /** @type {Chunk} */ (this.chunk))
|
||||
]),
|
||||
"}",
|
||||
`var onLinkComplete = ${runtimeTemplate.basicFunction(
|
||||
"prev, event",
|
||||
Template.asString([
|
||||
"link.onerror = link.onload = null;",
|
||||
"link.removeAttribute(loadingAttribute);",
|
||||
"clearTimeout(timeout);",
|
||||
'if(event && event.type != "load") link.parentNode.removeChild(link)',
|
||||
"done(event);",
|
||||
"if(prev) return prev(event);"
|
||||
])
|
||||
)};`,
|
||||
"if(link.getAttribute(loadingAttribute)) {",
|
||||
Template.indent([
|
||||
`var timeout = setTimeout(onLinkComplete.bind(null, undefined, { type: 'timeout', target: link }), ${loadTimeout});`,
|
||||
"link.onerror = onLinkComplete.bind(null, link.onerror);",
|
||||
"link.onload = onLinkComplete.bind(null, link.onload);"
|
||||
]),
|
||||
"} else onLinkComplete(undefined, { type: 'load', target: link });", // We assume any existing stylesheet is render blocking
|
||||
withHmr ? "hmr ? document.head.insertBefore(link, hmr) :" : "",
|
||||
"needAttach && document.head.appendChild(link);",
|
||||
"return link;"
|
||||
]
|
||||
)};`,
|
||||
initialChunkIdsWithCss.size > 2
|
||||
? `${JSON.stringify(
|
||||
Array.from(initialChunkIdsWithCss)
|
||||
)}.forEach(loadCssChunkData.bind(null, ${
|
||||
RuntimeGlobals.moduleFactories
|
||||
}, 0));`
|
||||
: initialChunkIdsWithCss.size > 0
|
||||
? `${Array.from(
|
||||
initialChunkIdsWithCss,
|
||||
id =>
|
||||
`loadCssChunkData(${
|
||||
RuntimeGlobals.moduleFactories
|
||||
}, 0, ${JSON.stringify(id)});`
|
||||
).join("")}`
|
||||
: "// no initial css",
|
||||
"",
|
||||
withLoading
|
||||
? Template.asString([
|
||||
`${fn}.css = ${runtimeTemplate.basicFunction("chunkId, promises", [
|
||||
"// css chunk loading",
|
||||
`var installedChunkData = ${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;`,
|
||||
'if(installedChunkData !== 0) { // 0 means "already installed".',
|
||||
Template.indent([
|
||||
"",
|
||||
'// a Promise means "currently loading".',
|
||||
"if(installedChunkData) {",
|
||||
Template.indent(["promises.push(installedChunkData[2]);"]),
|
||||
"} else {",
|
||||
Template.indent([
|
||||
hasCssMatcher === true
|
||||
? "if(true) { // all chunks have CSS"
|
||||
: `if(${hasCssMatcher("chunkId")}) {`,
|
||||
Template.indent([
|
||||
"// setup Promise in chunk cache",
|
||||
`var promise = new Promise(${runtimeTemplate.expressionFunction(
|
||||
`installedChunkData = installedChunks[chunkId] = [resolve, reject]`,
|
||||
"resolve, reject"
|
||||
)});`,
|
||||
"promises.push(installedChunkData[2] = promise);",
|
||||
"",
|
||||
"// start chunk loading",
|
||||
`var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
||||
"// create error before stack unwound to get useful stacktrace later",
|
||||
"var error = new Error();",
|
||||
`var loadingEnded = ${runtimeTemplate.basicFunction(
|
||||
"event",
|
||||
[
|
||||
`if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId)) {`,
|
||||
Template.indent([
|
||||
"installedChunkData = installedChunks[chunkId];",
|
||||
"if(installedChunkData !== 0) installedChunks[chunkId] = undefined;",
|
||||
"if(installedChunkData) {",
|
||||
Template.indent([
|
||||
'if(event.type !== "load") {',
|
||||
Template.indent([
|
||||
"var errorType = event && event.type;",
|
||||
"var realSrc = event && event.target && event.target.src;",
|
||||
"error.message = 'Loading css chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';",
|
||||
"error.name = 'ChunkLoadError';",
|
||||
"error.type = errorType;",
|
||||
"error.request = realSrc;",
|
||||
"installedChunkData[1](error);"
|
||||
]),
|
||||
"} else {",
|
||||
Template.indent([
|
||||
`loadCssChunkData(${RuntimeGlobals.moduleFactories}, link, chunkId);`,
|
||||
"installedChunkData[0]();"
|
||||
]),
|
||||
"}"
|
||||
]),
|
||||
"}"
|
||||
]),
|
||||
"}"
|
||||
]
|
||||
)};`,
|
||||
"var link = loadStylesheet(chunkId, url, loadingEnded);"
|
||||
]),
|
||||
"} else installedChunks[chunkId] = 0;"
|
||||
]),
|
||||
"}"
|
||||
]),
|
||||
"}"
|
||||
])};`
|
||||
])
|
||||
: "// no chunk loading",
|
||||
"",
|
||||
withHmr
|
||||
? Template.asString([
|
||||
"var oldTags = [];",
|
||||
"var newTags = [];",
|
||||
`var applyHandler = ${runtimeTemplate.basicFunction("options", [
|
||||
`return { dispose: ${runtimeTemplate.basicFunction(
|
||||
"",
|
||||
[]
|
||||
)}, apply: ${runtimeTemplate.basicFunction("", [
|
||||
"var moduleIds = [];",
|
||||
`newTags.forEach(${runtimeTemplate.expressionFunction(
|
||||
"info[1].sheet.disabled = false",
|
||||
"info"
|
||||
)});`,
|
||||
"while(oldTags.length) {",
|
||||
Template.indent([
|
||||
"var oldTag = oldTags.pop();",
|
||||
"if(oldTag.parentNode) oldTag.parentNode.removeChild(oldTag);"
|
||||
]),
|
||||
"}",
|
||||
"while(newTags.length) {",
|
||||
Template.indent([
|
||||
`var info = newTags.pop();`,
|
||||
`var chunkModuleIds = loadCssChunkData(${RuntimeGlobals.moduleFactories}, info[1], info[0]);`,
|
||||
`chunkModuleIds.forEach(${runtimeTemplate.expressionFunction(
|
||||
"moduleIds.push(id)",
|
||||
"id"
|
||||
)});`
|
||||
]),
|
||||
"}",
|
||||
"return moduleIds;"
|
||||
])} };`
|
||||
])}`,
|
||||
`var cssTextKey = ${runtimeTemplate.returningFunction(
|
||||
`Array.from(link.sheet.cssRules, ${runtimeTemplate.returningFunction(
|
||||
"r.cssText",
|
||||
"r"
|
||||
)}).join()`,
|
||||
"link"
|
||||
)}`,
|
||||
`${
|
||||
RuntimeGlobals.hmrDownloadUpdateHandlers
|
||||
}.css = ${runtimeTemplate.basicFunction(
|
||||
"chunkIds, removedChunks, removedModules, promises, applyHandlers, updatedModulesList",
|
||||
[
|
||||
"applyHandlers.push(applyHandler);",
|
||||
`chunkIds.forEach(${runtimeTemplate.basicFunction("chunkId", [
|
||||
`var filename = ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
||||
`var url = ${RuntimeGlobals.publicPath} + filename;`,
|
||||
"var oldTag = loadStylesheet(chunkId, url);",
|
||||
"if(!oldTag) return;",
|
||||
`promises.push(new Promise(${runtimeTemplate.basicFunction(
|
||||
"resolve, reject",
|
||||
[
|
||||
`var link = loadStylesheet(chunkId, url + (url.indexOf("?") < 0 ? "?" : "&") + "hmr=" + Date.now(), ${runtimeTemplate.basicFunction(
|
||||
"event",
|
||||
[
|
||||
'if(event.type !== "load") {',
|
||||
Template.indent([
|
||||
"var errorType = event && event.type;",
|
||||
"var realSrc = event && event.target && event.target.src;",
|
||||
"error.message = 'Loading css hot update chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';",
|
||||
"error.name = 'ChunkLoadError';",
|
||||
"error.type = errorType;",
|
||||
"error.request = realSrc;",
|
||||
"reject(error);"
|
||||
]),
|
||||
"} else {",
|
||||
Template.indent([
|
||||
"try { if(cssTextKey(oldTag) == cssTextKey(link)) { if(link.parentNode) link.parentNode.removeChild(link); return resolve(); } } catch(e) {}",
|
||||
"var factories = {};",
|
||||
"loadCssChunkData(factories, link, chunkId);",
|
||||
`Object.keys(factories).forEach(${runtimeTemplate.expressionFunction(
|
||||
"updatedModulesList.push(id)",
|
||||
"id"
|
||||
)})`,
|
||||
"link.sheet.disabled = true;",
|
||||
"oldTags.push(oldTag);",
|
||||
"newTags.push([chunkId, link]);",
|
||||
"resolve();"
|
||||
]),
|
||||
"}"
|
||||
]
|
||||
)}, oldTag);`
|
||||
]
|
||||
)}));`
|
||||
])});`
|
||||
]
|
||||
)}`
|
||||
])
|
||||
: "// no hmr"
|
||||
]);
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = CssLoadingRuntimeModule;
|
||||
Reference in New Issue
Block a user